#ifndef __M_BROKER_H__
#define __M_BROKER_H__

#include "muduo/proto/codec.h"
#include "muduo/proto/dispatcher.h"
#include "muduo/base/Logging.h"
#include "muduo/base/Mutex.h"
#include "muduo/net/EventLoop.h"
#include "muduo/net/TcpServer.h"
#include "../mqcommon/mq_threadpool.hpp"
#include "../mqcommon/mq_msg.pb.h"
#include "../mqcommon/mq_proto.pb.h"
#include "../mqcommon/mq_logger.hpp"
#include "mq_connection.hpp"
#include "mq_consumer.hpp"
#include "mq_host.hpp"

namespace bitmq
{
#define DBFILE "/meta.db"
#define HOSTNAME "MyVirtualHost"
    class Server
    {
    public:
        typedef std::shared_ptr<google::protobuf::Message> MessagePtr;

        Server(int port, const std::string &basedir)
            : _server(&_baseloop, muduo::net::InetAddress("0.0.0.0", port),
                      "Server", muduo::net::TcpServer::kReusePort),
              _dispatcher(std::bind(&Server::onUnknownMessage, this,
                                    std::placeholders::_1, std::placeholders::_2, std::placeholders::_3)),
              _codec(std::make_shared<ProtobufCodec>(std::bind(&ProtobufDispatcher::onProtobufMessage, &_dispatcher,
                                                               std::placeholders::_1, std::placeholders::_2, std::placeholders::_3))),
              _virtual_host(std::make_shared<VirtualHost>(HOSTNAME, basedir, basedir + DBFILE)),
              _consumer_manager(std::make_shared<ConsumerManager>()),
              _connection_manager(std::make_shared<ConnectionManager>()),
              _threadpool(std::make_shared<threadpool>())
        {
            QueueMap qm = _virtual_host->allQueues();
            for (auto &q : qm)
            {
                _consumer_manager->initQueueConsumer(q.first);
            }
            //------------------------------注册业务请求处理函数--------------------------------------------------------------
            // 信道注册
            _dispatcher.registerMessageCallback<bitmq::openChannelRequest>(std::bind(&Server::onOpenChannel,
                                                                                     this, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3));
            _dispatcher.registerMessageCallback<bitmq::closeChannelRequest>(std::bind(&Server::onCloseChannel,
                                                                                      this, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3));

            // 交换机注册
            _dispatcher.registerMessageCallback<bitmq::declareExchangeRequest>(std::bind(&Server::onDeclareExchange,
                                                                                         this, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3));
            _dispatcher.registerMessageCallback<bitmq::deleteExchangeRequest>(std::bind(&Server::DeleteExchange,
                                                                                        this, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3));

            // 队列注册
            _dispatcher.registerMessageCallback<bitmq::declareQueueRequest>(std::bind(&Server::onDeclareQueue,
                                                                                      this, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3));
            _dispatcher.registerMessageCallback<bitmq::deleteQueueRequest>(std::bind(&Server::onDeleteQueue,
                                                                                     this, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3));

            // 绑定注册
            _dispatcher.registerMessageCallback<bitmq::queueBindingRequest>(std::bind(&Server::onQueueBind,
                                                                                      this, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3));
            _dispatcher.registerMessageCallback<bitmq::queueUnBindingRequest>(std::bind(&Server::onQueueunBind,
                                                                                        this, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3));

            // 消息注册
            _dispatcher.registerMessageCallback<bitmq::basicPublishRequest>(std::bind(&Server::onPublish,
                                                                                      this, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3));
            _dispatcher.registerMessageCallback<bitmq::basicAckRequest>(std::bind(&Server::onBasicAck,
                                                                                  this, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3));

            // 订阅注册
            _dispatcher.registerMessageCallback<bitmq::basicConsumeRequest>(std::bind(&Server::onBasicConsume,
                                                                                      this, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3));
            _dispatcher.registerMessageCallback<bitmq::basicCancelRequest>(std::bind(&Server::onBasicCancel,
                                                                                     this, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3));
            //-------------------------------------------------------------------------------------------------------------------
            _server.setMessageCallback(std::bind(&ProtobufCodec::onMessage, _codec.get(),
                                                 std::placeholders::_1, std::placeholders::_2, std::placeholders::_3));
            _server.setConnectionCallback(std::bind(&Server::onConnection, this, std::placeholders::_1));
        }

        void start()
        {
            _server.start();
            _baseloop.loop();
        }

    private:
        // 打开信道
        void onOpenChannel(const muduo::net::TcpConnectionPtr &conn, const openChannelRequestPtr &message, muduo::Timestamp)
        {
            Connection::ptr mccon = _connection_manager->getConnection(conn);
            if (mccon.get() == nullptr)
            {
                DLOG("打开信道时,没有找到连接对应的Connection对象!");
                conn->shutdown();
                return;
            }
            return mccon->openChannel(message);
        }
        // 关闭信道
        void onCloseChannel(const muduo::net::TcpConnectionPtr &conn, const closeChannelRequestPtr &message, muduo::Timestamp)
        {
            Connection::ptr mccon = _connection_manager->getConnection(conn);
            if (mccon.get() == nullptr)
            {
                DLOG("关闭信道时,没有找到连接对应的Connection对象!");
                conn->shutdown();
                return;
            }
            return mccon->closeChannel(message);
        }

        // 声明交换机
        void onDeclareExchange(const muduo::net::TcpConnectionPtr &conn, const declareExchangeRequestPtr &message, muduo::Timestamp)
        {
            Connection::ptr mccon = _connection_manager->getConnection(conn);
            if (mccon.get() == nullptr)
            {
                DLOG("声明交换机时，没有找到信道,没有找到连接对应的Connection对象!");
                conn->shutdown();
                return;
            }
            Channel::ptr cp = mccon->getChannel(message->cid());
            if (cp.get() == nullptr)
            {
                DLOG("声明交换机时，没有找到信道!");
                return;
            }
            return cp->declareExchange(message);
        }
        // 删除交换机
        void DeleteExchange(const muduo::net::TcpConnectionPtr &conn, const deleteExchangeRequestPtr &message, muduo::Timestamp)
        {
            Connection::ptr mccon = _connection_manager->getConnection(conn);
            if (mccon.get() == nullptr)
            {
                DLOG("删除交换机时,没有找到连接对应的Connection对象!");
                conn->shutdown();
                return;
            }
            Channel::ptr cp = mccon->getChannel(message->cid());
            if (cp.get() == nullptr)
            {
                DLOG("删除交换机时，没有找到信道!");
                return;
            }
            return cp->deleteExchange(message);
        }

        // 声明队列
        void onDeclareQueue(const muduo::net::TcpConnectionPtr &conn, const declareQueueRequestPtr &message, muduo::Timestamp)
        {
            Connection::ptr mccon = _connection_manager->getConnection(conn);
            if (mccon.get() == nullptr)
            {
                DLOG("声明队列时,没有找到连接对应的Connection对象!");
                conn->shutdown();
                return;
            }
            Channel::ptr cp = mccon->getChannel(message->cid());
            if (cp.get() == nullptr)
            {
                DLOG("声明队列时，没有找到信道!");
                return;
            }
            return cp->declareQueue(message);
        }
        // 删除队列
        void onDeleteQueue(const muduo::net::TcpConnectionPtr &conn, const deleteQueueRequestPtr &message, muduo::Timestamp)
        {
            Connection::ptr mccon = _connection_manager->getConnection(conn);
            if (mccon.get() == nullptr)
            {
                DLOG("删除队列时,没有找到连接对应的Connection对象!");
                conn->shutdown();
                return;
            }
            Channel::ptr cp = mccon->getChannel(message->cid());
            if (cp.get() == nullptr)
            {
                DLOG("删除队列时，没有找到信道!");
                return;
            }
            return cp->deleteQueue(message);
        }

        // 队列绑定
        void onQueueBind(const muduo::net::TcpConnectionPtr &conn, const queueBindingRequestPtr &message, muduo::Timestamp)
        {
            Connection::ptr mccon = _connection_manager->getConnection(conn);
            if (mccon.get() == nullptr)
            {
                DLOG("队列绑定时,没有找到连接对应的Connection对象!");
                conn->shutdown();
                return;
            }
            Channel::ptr cp = mccon->getChannel(message->cid());
            if (cp.get() == nullptr)
            {
                DLOG("队列绑定时，没有找到信道!");
                return;
            }
            return cp->queueBind(message);
        }
        // 队列解绑
        void onQueueunBind(const muduo::net::TcpConnectionPtr &conn, const queueUnBindingRequestPtr &message, muduo::Timestamp)
        {
            Connection::ptr mccon = _connection_manager->getConnection(conn);
            if (mccon.get() == nullptr)
            {
                DLOG("队列解绑时,没有找到连接对应的Connection对象!");
                conn->shutdown();
                return;
            }
            Channel::ptr cp = mccon->getChannel(message->cid());
            if (cp.get() == nullptr)
            {
                DLOG("队列解绑时，没有找到信道!");
                return;
            }
            return cp->queueUnBind(message);
        }

        // 消息发布
        void onPublish(const muduo::net::TcpConnectionPtr &conn, const basicPublishRequestPtr &message, muduo::Timestamp)
        {
            Connection::ptr mccon = _connection_manager->getConnection(conn);
            if (mccon.get() == nullptr)
            {
                DLOG("发布消息时,没有找到连接对应的Connection对象!");
                conn->shutdown();
                return;
            }
            Channel::ptr cp = mccon->getChannel(message->cid());
            if (cp.get() == nullptr)
            {
                DLOG("发布消息时，没有找到信道!");
                return;
            }
            return cp->basicPublish(message);
        }
        // 消息确认
        void onBasicAck(const muduo::net::TcpConnectionPtr &conn, const basicAckRequestPtr &message, muduo::Timestamp)
        {
            Connection::ptr mccon = _connection_manager->getConnection(conn);
            if (mccon.get() == nullptr)
            {
                DLOG("消息确认时,没有找到连接对应的Connection对象!");
                conn->shutdown();
                return;
            }
            Channel::ptr cp = mccon->getChannel(message->cid());
            if (cp.get() == nullptr)
            {
                DLOG("消息确认时，没有找到信道!");
                return;
            }
            return cp->basicAck(message);
        }

        // 队列消息订阅
        void onBasicConsume(const muduo::net::TcpConnectionPtr &conn, const basicConsumeRequestPtr &message, muduo::Timestamp)
        {
            Connection::ptr mccon = _connection_manager->getConnection(conn);
            if (mccon.get() == nullptr)
            {
                DLOG("队列消息订阅时,没有找到连接对应的Connection对象!");
                conn->shutdown();
                return;
            }
            Channel::ptr cp = mccon->getChannel(message->cid());
            if (cp.get() == nullptr)
            {
                DLOG("队列消息订阅时，没有找到信道!");
                return;
            }
            return cp->basicConsume(message);
        }
        // 取消订阅队列消息
        void onBasicCancel(const muduo::net::TcpConnectionPtr &conn, const basicCancelRequestPtr &message, muduo::Timestamp)
        {
            Connection::ptr mccon = _connection_manager->getConnection(conn);
            if (mccon.get() == nullptr)
            {
                DLOG("取消订阅时,没有找到连接对应的Connection对象!");
                conn->shutdown();
                return;
            }
            Channel::ptr cp = mccon->getChannel(message->cid());
            if (cp.get() == nullptr)
            {
                DLOG("取消订阅时，没有找到信道!");
                return;
            }
            return cp->basicCancel(message);
        }

        void onUnknownMessage(const muduo::net::TcpConnectionPtr &conn,
                              const MessagePtr &message,
                              muduo::Timestamp)
        {
            LOG_INFO << "onUnknownMessage: " << message->GetTypeName();
            conn->shutdown();
        }

        void onConnection(const muduo::net::TcpConnectionPtr &conn)
        {
            if (conn->connected())
            {
                _connection_manager->newConnection(_virtual_host, _consumer_manager, _codec, conn, _threadpool);
            }
            else
            {
                _connection_manager->delConnetion(conn);
            }
        }

    private:
        muduo::net::EventLoop _baseloop;
        muduo::net::TcpServer _server;  // 服务器对象
        ProtobufDispatcher _dispatcher; // 请求分发器对象--要向其中注册请求处理函数
        ProtobufCodecPtr _codec;        // protocbuf 协议处理器--针对收到的数据进行协议处理
        VirtualHost::ptr _virtual_host;
        ConsumerManager::ptr _consumer_manager;
        ConnectionManager::ptr _connection_manager;
        threadpool::ptr _threadpool;
    };
}
#endif
